How to reset a variable value and use if-block in xsl syntax

I have  a variable that is set to value of an attribute within a node. now i need to do a check within an if-else block and reset the value of this variable. how do i do this in xsl syntax?

this is the varName
<xsl:variable name="SubZone" select="$varSubZone/@code"/>

i now need to test if this variable contains ("BL", 'AC", 'GR") and if so then set SubZone= "112"
otherwise leave as is.

all of this is inside a <when> bracket
please advise.

Who is Participating?
Geert BormansConnect With a Mentor Information ArchitectCommented:
First, variable don't vary in XSLT
They keep the assigned value all through their lifetime (they are more like constants)

You have however full access to the entire XML tree.
So it is easy to create selection nodesets and test against.

Can you please explain what you really want, so we can help you with that

(so post some input, xslt and expected output)
badtz7229Author Commented:
hi Gertone:
i actually resolved this by using a choose when statement and defining my new node as a string inside the statement instead of a variable to define it for the same reason u stated
Geert BormansInformation ArchitectCommented:
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